Title: The Pennsylvania business state directory for 1850-1851: containing the names of professional men, mercantile firms, and manufacturing establishments, together with all the courts, post offices, public institutions, banks, corporations, companies, hotels, associations, & c. & c., throughtout the state, also the principal firms of the city of Cincinnati, Ohio, and Baltimore, Maryland ; together with a great variety of other useful matter, which has been collected expressly for this work by agents who have canvassed every county in the state, 1850/1851

Publication Info: Philadelphia. Giles & Brothers. 1850